Locking mechanism



Feb. 7, 1933. w. F. DIESEL 1,896,635

' LOCKING MECHANISM Filed March 2, 1926 s Sheets-Sheet 1 Feb. 7, 1933. w. F. DIESEL LOCKING MECHANISM Filed March 2, 1926 5 Sheets-Sheet 2 Feb. 7, 1933. w. F. DIESEL 1,896,685

LOCKING MECHANISM Filed March 2, 1926 5 Sheets-Sheet 3 INVENTOR 215A 0R EYS Feb. 7, 1933. w. F. DIESEL 1,896,685

LOCKING MECHAN'I SM Filed March 2. 192a 5 Sheets-Sheet 4 INVENTOR I filkseb Feb. 7, 1933. w. F. DIESEL LOCKING MECHANISM Filed March 2, 1926 s Sheets-Sheet 5 .INVENTOR Wzllzmiflzesel/ zlsA OR YS Patented Feb. 7, 1933 UNITED STATES PATENT @FFICE WILLIAM F. DIESEL, OF ROCHESTER, NEW YORK, ASSIGNOR TO SARGEN T & GREENLEAF, INQ, OF ROCHESTER, NEW YORK, A CORPORATION OF N EW YORK LO CKING MECHANISM Application filed March 2, 1926. Serial N0. 91,765.

The present invention relates to locking mechanism for guarding the doors or closures of safes, vaults or other containers or compartments employed for protecting valuables of various kinds.

One object of the invention is to provide improved locking mechanism for said doors or closures whereby to delay opening of the same for a definite and predetermined period after the locking mechanism has been moved to protecting position.

Another object of the invention is to provide an improved securing mechanism for the doors or closures of safes, vaults and the like in combination with timing mechanism adapted to prevent release thereof for predetermined periods to be determined by a person in charge of or responsible for contents of the safe.

A further object of the invention is to provide an improved time controlled securing mechanism for the closures of safes, vaults or the like in conjunction with a combination or other type of lock or controlling means by which the timing mechanism is prevented from operating until said lock or controlling means is moved to release position with respect thereto.

A further object of the invention is to provide improved loclsing means for the closures of safes, vaults and the like embodying bolt-work or other protecting means in combination with obstructing means therefor adapted to be conditioned thereby for movement automatically to obstructing position upon movement of the bolt-work in one direction and further to provide means for controlling the operation of the obstructing means, preferably a timing mechanism for delaying its release together with a selective control mechanism or a combination-lock or other suitable means for guarding the timing mechanism, the latter serving to prevent unauthorized persons from gaining immediate access to the contents of the safe following successful operation of the combination lock or other means for controlling the timing mechanism.

A further object of the invention is to provide in conjunction with a safe or vault securing mechanism under the control of a combination or other lock, protecting means which will automatically operate to prevent release of the securing mechanism should attempt to made to enter the safe by disabling the'combination look as by driving in the spindle thereof or by otherwise mutilating or destroying its usefulness.

A still further object is to provide improved means adapted in case where dynamite or other materials are exploded within the safe to prevent dropping or release of the bolt-work obstructing means at the time of the explosion or by subsequently arring or moving it to release position or by the use of an instrument, the improved means being of a nature whereby as a result of the explosion relative movement will be afforded between certain parts of the mechanism and said means so that the latter will immediately occupy a protecting position with respect to the bolt Work.

To these and other ends the invention resides in certain improvements and combinations of parts, all as will be hereinafter more fully described the novel features being pointed out in the claims at the end of the specification.

In the drawings:

Figure 1 is a sectional elevation through a vault or other container looking at the inner face of the closure therefor and showing the manner of applying the present invention thereto.

Figure 2 is a side elevation, illustrating one embodiment of the invention as applied to the door of a safe or vault having a combination lock thereon.

Figure 3 is a fragmentary view in elevation looking at the front of that portion of the door shown in Figure 2.

Figure 4 is a rear elevation illustrating one embodiment of the invention with the parts shown in locking position.

Figure 5 is a similar view with the obstructingmeans for the bolt work shown in release position.

Figure 6 is afragmentary view in elevation illustrating a portion of the lever for controlling the obstructing means for the timing mechanism.

Figure 7 is a view in elevation showing the opposite side of the bolt work obstructing means from that shown in the lower part of Figure 5.

Figure 8 is a fragn'ientary elevation showing the bolt work in release position or after it has conditioned the obstructing; means for automatic movement to obstructing position following the return of the bolt work to securing position.

Figure 9 is a view showing the obstructing means in protecting position to which it is automatically moved following; movement of the bolt work from the position shown in Figure 8.

Figure 10 is a sectional plan taken on line 10a10a of Figure l- Figure 11 is a fragmentary elevation illustrating the position automatically assumed by a locking device for preventing unauthorized release of the time obstructing means should the spindle of the combination lock be driven in by persons attempting to gain access to the safe or vault.

Figure 12 is a sectional plan ta ton on line 12a12a of Figure 11.

Figure 13 is a plan view illustrating a de tached portion of the bolt work obstructin means; and

Figure 14 is a detailed perspective view of a control lever for moving the obstructing means for the timin mechanism to and from operating position.

Similar reference numerals through out the several views indicate the same parts.

The present invention is designed to afford a. safeguard, particularly aa ainst davliaht h-oldups of bank vaults. safes and the like by holding: in check the bolt work or securins; mechanism for lockin 9 the door of the vault for a predetermined length of time af er the ombinat on or other controlling: m ans has been released whe eby to foil any attempt of bandits or bank robbers in training immediat access to the contents of the vault or safe upon enterin the bank.

The invention embodies generally a primary and a secondary or auxiliary control means for controlling the locking securing mechanism of a closure for a safe, vault or other container with the primary means arranged to be set for operation for variable time periods to effect release of th s ur e means at the ends of said periods. the ondary control means acting to prevent or delay operation of the primary means and being preferably in the rature of m .is making it necessary for an unauthorized person. to obtain certain information of a confidential nature before he can successfully release the secondary control means. The primary control means may be considered as part of the securing or locking mechanism which it controls.

The secondary control means in the present instance is preferably shown as a combination look, but may constitute other means if desired. The primary control means preferably constitutes a suitable timing mechanism and is shown in duplicate so that if one of the devices fails to operate the other can be relied on to function in the desired manner. The timing mechanism is under the guard or protection of the secondary control means or combination lock and cannot begin operation until the combination is successfully operated. The securing mechanism under the control of the timing mechanism preferably includes suitable bolt work for the door or closure of the container and obstructing means therefor adapted upon release of the bolt work to be conditioned thereby for automatic movement to obstructing position when the bolt work is cast or returned to securing position. The bolt work obstructing means constitutes that portion of the securing mechanism which is released by the timing mechanism when the latter has operated for a predetermined period to be determined by the person having authority to control the operations of the mechanism.

In the present embodiment of the invention, 10 represents conventionally a safe or vault having a door or closure irovided on its inner face with rearwardly projecting ribs or plates 12 in which are slidably mounted suitable means for guarding the closure preferably comprising the bolts 13 FllOWll in locking position in Figure 1. The bolts are connected by pins 15 with a vertically disposed bar 14 which is adapted to actuate the bolts simultaneously, the bar being moved by any suitable means such as a handle 16 and crank arm 17 having its free end disposed between the lugs 18 of the bar as shown in Figure 1. The bar is provided with a laterally extending rod or projecting; element 19 guarded by protecting mechanism comprising in part a suitable obstructing element 20 preferably in the form of a pivoted dog mounted within a casing 21 secured on the back of the door 11 and containing the combination lock and timin mechanism. The casing is provided with a door 2:? hinged thereon, which is provided with a transparent panel 23 through which the timing mecranism is rendered visible. The casing is spaced slightly from the door, preferably by a. plurality of rubber or other yieldable spacing members 9A as shown in Fi are 2 which afford a certain degree of protection to the timing mechanism by partially absorbing the blows to which the door 11 may be subjected from time to time.

The upper part of the casino; containing the combination lock or auxiliary control means is preferably provided with a separate closure comprising a frame carrying a transparent panel 26 through which the combination lock is rendered visible, the frame being secured by screws 27 threaded into lugs 28 on the casing.

. The usual knob and dial plate for the combination lock are indicated at 29 and 30, respectively, being provided with a spindle 31 projecting through the closure 11 into the container and through a sleeve 32 secured to the casing and rotatably supporting any desired number of tumblers 33 having notches 34 adapted to be brought into registry as indicated in Figures 5 and 6 before successful operation of the combination can be eifected. A disk 35 is secured upon the spin die 31 to rotate therewith and is provided. with an inwardly extending pin or lug (not shown) for operating the tumblers in the usual manner. The disk 35 is provided with a hub 36 adapted to project through a slot 37 in a lever or operating member 38, the purpose of which will presently appear. A washer 39 is carried by the hub to prevent outward displacement of the lever and a semicircular spring 40 is held in a groove formed in the hub whereby the washer and lever are held against displacement longitudinally of the spindle. A key4l connects the hub of the disk 35 with the spindle whereby tation of the latter effects rotation of the e -r and the tumblers as well. The lever or operating-member 38 is provided for the purpose of moving the obstructing means for the timing or primary control mechanism to and from obstructing position, these positions being shown respectively in Figures 4 and 5.

The timing devices, two of w nich are shown, may constitute any suitable clocl driven or other desired mechanism for controlling the release of the dog or pivoted obstructing member 20, provided for "il ing the bolt work as will be hereinafter eescribed. The timing devices operate inde pendently of each other either of n Llifil will effect release of the bolt worlr obsti .Ci in means, should the other fail to operate.

Each timing device comprises a rotatable dial 42 having graduations 43 representing any divisions of time desired, such for eXam ple, as hours, shown in the present instance asdivided into ten minute periods. A fixed pointer or index member 44 is arranged to correspond to the zero position of the dial when the latter is in rundown position. Previous to closing and locking the safe or vault the dials are set for a predetermined period, determined by the officials in charge, *eing shown set in Figure 4 for a period of two hours merely by way of example. The set-V ting is effected through the me lium of a suitable key adapted to be inserted upon the motor driven arbor 45 for winding the mechanism, through openings in the door panel,

the usual train of gears being provided, as shown, for driving the dials which are adapted to rotate counterclockwise as shown in Figure 4. The usual escapement wheel is j indicated at 46 and the pallet for controlling the same is shown at 4. When the vault door is closed and locked and the combination destroyed, the several controlling mechanisms will be in the position shown in Figure 4, in which the previously set timing mechanism is prevented from operation by obstructing the movement of the pallets 47, which is done through the medium of a pair of fingers or rods 48 depending from a slide bar 49 movable upon a pair of spaced members '50, Figure 12, said bar being held in position and guided by a pair of screws 51 extending through slots 52 of the bar and threaded into the spaced members 50. The

slide bar is'provided with a laterally projecting pin 53 extending into a slot 54 in the lever 38, the latter constituting the operating means for moving the slide whereby to move the depending lingers 48 into and out of obstructing position with respect to the pallets 47 of the timing mechanism as shown respectively in Figures 4 and 5.

The lever 38 which is of the is under the control of the combination lock and cannot be moved to effect releaseof the timing mechanism until the combination lock has been successfully operated. On the other hand when the combination is destroyed, the

floating type,-

lever is automatically returned to the central raised position shown in Figure 4 in which it serves as a guard to prevent release of the timing mechanism through shifting of the slide 49, release of which might otherwise be effected by a burglar in jarring the slide out of securing position or by tipping. the safe or container to one side and permitting the slide to shift by gravity to said release position. The lever is provided with a projecting lug 55 above which extends laterally from the lever a finger 56 adapted to drop into the notch-es 34 of the tumblers, only when they are all brought into registry, as takes place when the combination is successfully operated. The raising of the lever from the release position shown in Figures 5 and 6 is effected by a cam 57 formin one side of a notch 58 in the disk 35, which operates the tumblers and which is operated by the spindle 31. In destroying the combination, the cam 57 will move into engagement with the bottom of the lug 55 of the lever and raise the letter from the position shown in Figure 6 to that shown in Figure 4, and during this operation the finger is moved out of the notches 34 of the tumblers so that continued rotation of the dial plate will destroy the combination by shifting the tumblers one relative to another, to move the notches thereof out of registry. After the lever has been lifted to the position shown in Figure 4, con- Rite tinued rotation of the disk 35 will move the notch therein out of registry with the lug 55 5 of the notches are again brought into registry.

It will be seen therefore that the combination must be successfully operated before the lever can be swung from the central raised position shown in Figure 4 in which it blocks release of the slide L9 and fingers 48 which guard the timing mechanism. The tumblers therefore constitute the operating means for the lever, becoming efiective for this purpose as soon as the finger 56 drops into the notches, as shown in Figure 6. From this position, turning of the dial spindle will move all of the tumblers in unison and the lever will be shifted to the release position shown in Figure 5, from which it may be returned to central position by rotating the spindle in the opposite direction.

hen the safe or vault is locked and the combination destroyed the lever is guarded by a stop lug or abutment 59 projecting from the wall of the casing at tne right side of the finger 56, making it impossible to shift the lever to effect release of the timing mechanism. This safety means is provided as a precaution against jarring the lever to re lease position by any method which may be employed by a burglar, as by dynamitin g the safe, in which case the effect of the explosion might cause the lever to shift from the position shown in Figure 4; if means were not provided to prevent such movement. The notches 34; of the tumblers are deep enough to permit the finger 56 when operating in the notches to move under and clear the lug 59 upon rotation of the tumblers cloc wise from the position shown in Figure 6. Return of the finger 56 from the position shown in Figure 5 to that shown in Figure 6 takes place before the cam 57 begins to raise the lever, through engagement with the bottom of the lug thereon.

The dog or obstructing member 20 constituting a portion of the door securing mechanism, has associated therewith an arm (30 provided with a laterally projecting sleeve or tubular portion 61 pivoted upon a stud 62 having a portion 63 threaded into the rear wall of the casing 21 as shown in Figure 10. The dog 20 is pivoted upon the sleeve 61 of the arm to swing thereon relatively to the arm. A washer 64- serves to prevent displacement of the arm and the dog, the washer being retained by a screw 65 threaded into the end of the stud 62 as indicated in Fig re 10. The arm is adapted to support the dog in the obstructing position indicated in Fig ures 4 and 9 through the medium of a latch 66 pivoted upon the dog at 67 and having its upper end held in a notch 68 of the arm by a pin 69 disposed within a recess formed in the dog, the pin being actuated into engagcment with the latch by a spring 7 O as shown in Figure 4. The means for holding the arm 60 in position to maintain the dog in obstructing position comprises a latch member 71 having a tongue or shoulder 72 adapted to extend under a pin 73 projecting outwardly from the arm, the pin being preferably provided with a V-shaped portion 74 to facilitate cooperation between the pin and latch in the holding and releasing of the dog. The latching member 71 is detachably connected with a slide 75 by means of a screw 76. The opposite ends of the slide are guided in suitable brackets 77 on the side walls of the easing 71. The slide is provided with upstanding arms 7 8 disposed in the path of laterally projecting pins 79 carried by and adapted to be rotated with the dials 42 of the timing mechanism. The latch member 71 is normally held in position to support the arm 60 and dog 20 by a plunger 80 pressed outwardly by a spring 81 in a tubular member 82 carried by one of the brackets 77 as shown in Figure 5, the outer end of the plunger being in constant engagement with a lug 83 on the latch member whereby the arms 78 of the slide are urged in the direction of the pins 79 projecting from the dials 42. The latch member 71 is thereby held in supporting relation with respect to the arm 60 and dog 20 until moved to release position by the pins 79 revolving with the dials when the latter are rotated counter clockwise from the set position shown in Figure 4 to the release position shown in Figure 5, in which the dog and its supporting arm are shown in their lowest position and to which they fall by gravity when released to clear the bolt work element 19. The bolt work is thus freed from obstruction and may be operated to unlock the closure by turning the handle 16 on the outside of the safe door.

\Vhen the dog 20 is released by the latching member 71 so that it is free to drop by gravity, the latch 66 for connecting the dog with the arm is automatically moved to release position through engagement of the angular portion 84: of the latch with the bottom wall of the casing, whereby the latch is swung upon its pivot to clear the arm as indicated in Figures 5 and 8.

As previously stated, means is provided whereby the bolt work is moved to release position to condition the dog for movement automatically to obstructing position as soon as the bolt work is returned to locking position. In moving the bolt work to release position the member 19 is projected through an opening 85 in the casing 21 to the extreme position indicated in Figure 8. In moving to this position said member is adapted to strike a rod 86 which is guided by the dog and which, at its opposite end, is provided with a bevelled or cam surface 87 which is forced under a pin 88 projecting from the arm whereby the pin is raised to move the arm to the position shown in Figure 8. The pin projects through a slot 89 in the arm and into a recessed portion of the latter in which is disposed a spring 91 preferably of the leaf type as shown in Figure 7 The outer end of the spring is anchored in a slot formed in the dog and its opposite end rests upon the pin 88 so that when the rod is driven beneath the pin by the member 19., the spring becomes tensioned in the raising of the arm. The purpose of thus raising the arm when moving the bolt work to release position is to elevate the outwardly projecting pin 73 of the arm so that upon setting the dials by movement from the position shown in Figure 5 to that shown in Figure 4;, the slide 75 is freed for movement to the left by the spring 81 whereby the shoulder 72 of the latching member 71 is moved under the pin 73 of the arm to hold the latter in elevated position. This is the position to which the arm is auto matically moved by the elemen 19 of the bolt 1 work. As long as the element 19 remainsin the position shown in Figure 8, the dog 20 will occupy the position shown in this figure. However, immediately upon casting the bolt work and withdrawing the element 19, the spring 91 will automatically move the dog from the position shown in Figure 8 to that shown in Figure 9, and the bolt work cannot be released until the timing mechanism is first released by operating the combination look, after which the timing mechanism must operate for the period for which it was previously set before the safe can be opened.

Therod 86 which tensions the spring 91 is prevented from turning by a. screw 92 engaging a flattened portion 93 of the rodas shown in Figure 10.

Safety means is provided for preventing the dropping of the dog and release of the bolt work in case dynamite or other materials are exploded within the safe with the idea of damaging the timing or bolt work obstructing mechanism sufficiently to permit release of the bolt work in orderto gain access to the safe. In this connection it will be noted that the casing 21 is secured to the closure 11 by a plurality of studs or screws 94 having heads 95 countersunk within the wall of the casing as shown in Figure 10, the casing having the yieldable spacing members 24 between it and the closure and through which the studs are extended. At the bottom of the casing and behind the dog 20, a relativelythin plat'e96 is disposed in front of the heads of the studs 94, the plate'being secured to the rear wall of the casing by a screw 97 as shown in Figure 10. The plate is provided at its right end as viewed in Figure 9 with a slot 98 occupying a position immediately below the obstructing end of the dog when the latter is in raised or obstructing position. The portion of the plate below the slot, indicated at 99, lies directly in front of the head of thelower right hand securing stud 94:. In cases where dynamite or other materials are exploded within the safe with the idea of displacing or releasing the bolt work protecting mechanism, the force of the explosion will result in driving the casing toward the door or closure 11 since the resistance of the yieldable spacing memoers 24 wi l be readily overcome, the result being that the head 95 of the lower right hand stud will force the plate portion 99 inwardly or to the approximate position shown by dotted lines in Figure 10, in which position it will lie beneath the dog to prevent its drop- Jin and conser uentl Y preventin release of b L b I the bolt work.

Safety means is also provided for preventing release of the timing mechanism should the spindle of the combination lock be driven in, as is often done by burglarsattempting to gain access to safes or vaults containing money or other valuables. This means is adapted to prevent jarring or otherwise effecting movement of the slide 49 and depending fingers 4E8 thereon from obstructing positian with relation to the timing mechanism as indicated at Figure 4. In this connection it will be understood that shouldthe spindle be driven in, the lever 38 thereon will also be forced inwardly along with the spindle without interfering with the slide 49, since the headless pin 53 thereon projecting within the slot 54 of the lever will not interfere with the inward movement of the latter. The means for holding the slide 49 against movement from protecting position after the spindle has been driven in comprises a latch 100 pivoted upon the rear wall of the casing 21 at 101 and normally held in non-latching position by a pin 102 projecteing from the lever beneath the latch as shown in Figures & and 5. The latch when released by displacement of the lever is forced downwardly by a spring 103 to engage a pin 104 extending from the slide 49 into the space between the supports 50 of the latter as shown in Figures 11 and 12. The slide is thus positively held against release by the latch and the burglars attempt to gain access to the contents of the safe by driving in the spindle and releasing the ob,- structing means for the timing mechanism is prevented.

A guard plate 105 is disposed in front of the latch and is secured to the casing by screws 106 as shown in Figure 11. The guard plate is provided to prevent raising of the latch to release the slide by the use of a wire or other instrument inserted through the closure 11 after the spindle is driven in. The guard plate is cut away at 107 to permit movement of the pin 102 on the lever 38 as the latter is moved to and from the positions indicated in Figures 4 and 5. The spring 108 for depressing the latch is preferably soldered or otherwise secured to the base portion 108 of an arm 109, which is slotted at 110 to receive a key (not shown) by which the combination may be changed when desired, the key being inserted through said slot and into registering slots 111 formed in the tumblers 33.

In the operation of the lock mechanisms, assuming that the vault or safe door is open and that it is desired to close and lock the same, the operator will first set the timing mechanism to operate for a predetermined period after the combination lock is released, such period or periods preferably being for relatively short intervals during banking hours or while business is being transacted, whether in the case of banks, stores or manufacturing establishments employing the present lock mechanism for protection against robbery. On the other hand at night or during holidays the timing mechanism will of course be set for longer periods. It will be understood as stated above that when the bolt work is moved to release position, the arm will be raised by the rod 86 through movement thereof by the bolt work element 19 as shown in Figure 8, thus raising the pin 73 to permit the tongue of the latch member 71 to move under the pin, this operation taking place simultaneously through the action of the spring 81 upon rotating the dials counter-clockwise from the zero position to the desired set position. The door of the safe or vault is then closed and the bolt work cast and as the element 19, moving with the bolt work, clears the end of the dog 20, the previously tensioned spring 91 thereof will automatically raise the dog to the obstructing position shown in Figures 4 and 9. The safe thus becomes locked and guarded by the obstructing dog under the control of the timing mechanism. Before the safe can again be opened, the combination lock must be brought to release position, following which the lever 38 will drop from the protecting position shown in Figure l to that shown in Figure 6, after which the knob 29 of the dial plate will be turned to move the lever to the position shown in Figure 5. The lever in turn moves the shde 49 and depending fingers 48 to clear the pallets 47 whereby the clock mechanism immediately begins operation. In approaching the zero position or the end of the predetermined period for which the time devices were previously set, the pins 79 on the rotating wheels 42, will engage the upstanding arms T8 of the slide 7 5 and begin movement of the latch member 71 to the right as viewed in Figure l. As soon as the tongue or shoulder 72 of the latch member clears the pin 7 3, the dog 20 and parts associated therewith will drop by gravity to release position and permit the bolt Work to be retracted so that the door or closure of the safe can be opened.

What I claim is 1. In combination, a container including a closure and locking means therefor, including relatively movable securing and protecting mechanisms, the latter being conditioned for movement automatically to obstructing position with respect to the former upon release of the former, whereby when the securing mechanism is moved to securing position the protecting mechanism will obstruct and prevent release of the securing mechanism.

2. In combination, a container including a closure and locking means therefor, including relatively movable securing and protecting mechanisms, the latter being conditioned for movement automatically to obstructing position with respect to the former upon release of the former, whereby when the securing mechanism is moved to securing position he protecting mechanism will obstruct and prevent release of the securing mechanism and means for controlling the operations of saio mechanisms.

3. In combination, a container including a closure and locking means therefor, including relatively movable securing and protecting mechanisms, the latter being conditioned for movement automatically to obstructing position with respect to the former upon release of the former, whereby when the securing mechanism is moved to securing position the protecting mechanism will obstruct and prevent release of the securing mechanism, and timing mechanism adapted after operation for a predetermined period to effect release of said protecting mechanism.

l. In combination, a container including a closure, securing means for the closure including relatively movable devices, one of which embodies means adapted to be actuated by the other whereby the former is conditioned for movement to obstructing positi on with respect to the latter when the latter is moved to a predetermined position and means operable to control release of the obstructing device.

5. In combination, a container including a closure, securing means for the closure including relatively movable devices, one of which is adapted to be conditioned for automatic movement to obstructing position with relation to the other when the latter is moved to release position and means operable to prevent release of the obstructing device for variable periods of time.

6. In combination, a container including a closure, securing means for the closure including relatively movable devices, one of which is adapted to be conditioned for automatic movement to obstructing position with relation to the other when the latter is moved to release position and timing mechanism adapted after operation for a predetermined period to release said obstructing device.

7. In combination, a container including a closure, securing means for the closure including relatively movable devices one of which comprises means adapted to be actuated by the other whereby the former is conditioned for automatic movement to obstructing position with respect to the latter under predetermined conditions of operation and selective control means for guarding said securing means when the latter is in protecting position with respect to the closure. 7

8. In combination, a container including a closure, securing means for the closure including relatively movable devices one of which comprises means adapted to be actuated by the other whereby the former is conditioned for movement to obstructing position with respect to the latter under predetermined conditions of operation and timing mechanism adapted after operation for a predetermined period to release the obstructing device whereby to permit release of the device obstructed thereby.

9. In combination, a container including a closure, securing means therefor including relatively movable devices, one of which is adapted to releasably obstruct the other whereby to prevent openin of the closure, a part for releasing said obstructing device movable relativethereto timing mechanism operable for a predetermined period and adapted at the end of said period to operate said part whereby to eifect release of said obstructing device and means operable independently of said part and of the securing means adapted to be moved when the closure is in locked position to prevent operation of said timing mechanism.

10. In combination, a. container including a closure, securing means therefor including relatively movable devices one of which is adapted to releasably obstruct another whereby to prevent opening of the closure, a part for releasing said obstructing device movable relativethereto primary means operable for a predetermined period and adapted at the end of said period to operate said part whereby to release said obstructing device and auxiliary means including a combination lock independently operable with re spect to said part and said securing means and adapted when the combination is stroyed with the closure in closing position to be moved by the combination look into position to prevent operation of said primary means.

11. In combination, a safe including a closure, securing mechanism therefor, a lock, timing mechanism adapted to control the securing mechanism and obstructing means for the timing mechanism independent of the securing mechanism controlled thereby including relatively movable devices one of "which comprises a, lever under controlof the lock and the other a reciprocally mounted part movable to obstructing position by the lever when the closure is in closed position.

12. In combination, a safe including a closure, securing mechanism therefor, timing mechanism for controlling said securing mechanism, a combination lock including an operating spindle and means for obstructing the timing mechanism including a member arranged to swing about the aXis of the spindle and to be operated thereby.

13. In combination, a safe including a closure, securing mechanism therefor, timing mechanism for controlling said securing mechanism, a combination lock including an operating spindle, an abutment adjacent the lock and means for obstructing the timing mechanism including a member arranged to swing about the axis of the spindle and adapted when the combination is destroyed to be held in check by said abutment.

14. In combination, a safe including a clo sure, securing mechanism therefor, timing mechanism for controlling said 7 securing meachinsm, a combination lock including an operating spindle and means for obstructing the timing mechanism including relatively movable partsone of which is operatively associated with the spindle and arranged to have a sliding movement and a swinging movement about the axis thereof.

15. In combination, a safe including a closure, securing mechanism therefor, timing mechanism for controlling said securing mechanism, a combination lock including an operating spindle, means operatively connected with the spindle for obstructing the timing mechanism including relatively movable parts one of which is arranged to have a sliding movementto inoperative position and a swinging movement about the aXis of the spindle while operating another of said parts, and means for preventing release of the first mentioned'part when the combination is destroyed.

16. In combination, a safe including a closure, securing mechanism therefor, timing mechanism for controlling the securing mechanism, a combination lock including an operating spindle and means for obstructing the timing mechanism including a member adapted to swing about the axis of the spindle and arranged to be moved by and relative to the spindle.

17. In combination, a safe including a 010* sure, securing mechanism therefor, timing mechanism for controlling the securing 1nechanism, a combination lock including an op-- erating spindle, means for obstructing the timing mechanism including a member adapted to swing about the axis of the spindle and arranged to be moved by and relative to the spindle and means for preventing operation of said member when the combination is destroyed.

18. In combination, a safe including a clo- 1 sition, means sure, securing mechanism therefor, timing mechanism for controlling the securing mechanism, a combination lock including a spindle and a series of tumblers provided with notches adapted to be brought into registering relation when the lock is in release position, means for obstructing the timing mechanism including a member operatively associated with the spindle and arranged to swing about and to move relative to its axis and having a portion adapted when the lock is in release position to engage the tumblers within said notches, whereby upon rotation of the spindle in opposite directions the tumblers will swing said member to and from said obstructing position with respect to the timing mechanism.

19. In combination, a safe includinga closure, securing mechanism therefor, tim ng mechanism for controlling the securing mechanism, a combination lock including a spindle and a series of tumblersprovided with notches adapted to be brought into registering relation when the loclr is in release pofor obstructing the timing mechanism including a guard and an operating member therefor arranged to swing about and to move relative to the axis of the spindle and having a portion adapted when the lock is in release position to engage tne tumblers within said notches, whereby rotation of the tumblers within said notches, whereby rotation of the tumblers in opposite directions will cause said member to move the guard to and from obstructing posit1on with respect to the timing mechanism, means connected with the spindle for actuating said member to cause said portion to move out of said notches when the guard is in protecting position and the spindle is operated to destroy the combination and means for preventing operation of said member until the lock is subsequently moved to release position.

20. In combination, a safe including a closure, locking means for the closure including relatively movable mechanisms one of which is adapted to condition the other for automatic movement to obstructing position when moved to release the closure whereby upon locking the closure said conditioned mechanism will operate to obstruct the conditioning mechanism and means by which to eiiect release of the conditioned mechanism.

21. In combination, a safe including a closure, locking means for the closure including relatively movable mechanisms, one of which is adapted to condition the other for automatic movement to obstructing position when moved to release the closure whereby upon locking the closure said conditioned mechanism will operate to obstruct the conditioning mechanism and selective control means for releasing the conditioned mechan1sm.

22. In combination, a safe including a closure, locking means for the closure including relatively movable mechanisms, one of which is adapted to condition the other for automatic movement to obstructing position when moved to release the closure whereby upon locking the closure said conditioned mechanism will 0 ie ate to obstruct the conditioning mechanism, timing mechanism for releasing said conditioned mechanism after operation for a predetermined period including a part adapted to move into supporting engagement with said conditioned mechanism upon setting the timing mechanism and arranged to be moved by the latter at the end of said period to release position with respect to the conditioned mechanism.

23. In combination, a safe including a closure, locking means for the closure including relatively movable mechanisms, one of which is adapted to condition the other for automatic movement to obstructing position when moved to release the closure whereby upon locking the closure said conditioned mechanism will operate to obstruct the conditioning mechanism, timing mechanism for releasing said conditioned mechanism after operation for a predetermined period includ ing a part adapted to move into supporting engagement with said conditioned mechanism upon setting the timing mechanism and arranged to be moved by the latter at the end of said period to release position with respect to the conditioned mechanism and selective control mechanism for guarding and releasing the timing mechanism.

24. In combination, a safe including a closure, locking means for the closure including relatively movable mechanisms, one of which is adapted to condition the other for automatic movement to obstructing position when moved to release the closure whereby upon locking the closure said conditioned mechanism will operate to obstruct the conditioning mechanism, timing mechanism arranged to operate for a predetermined period to eiiect release of the conditioned mechanism anc selective control mechanism for guarding and releasing the timing mechanism.

25. In combination, a safe including a closure, protecting mechanism for the closure including relatively movable devices, one of which forms securing means for the closure and the other comprising obstructing means for the securing means arranged to be conditioned by the latter upon its release for antomatic operation to obstructing position when the securing means is moved to closure securing position and means for releasing the obstructing means.

26. In combination, a safe including a closure, protecting mechanism for the closure including relatively movable devices, one of llO ' which forms securing means forthe closure sure including relatively movable devices, one

of which forms securing means for the-closure and the other comprising obstructing means for the securing means arranged to beconditioned by the latter upon its release 'for automatic operation to obstructingposition when the securing means is moved to protecting position, timing mechanism arranged to be set for operation for a predetermined period and adapted at the end of said period to effect release of the obstructing means, a lock, and meansunder the COD,- trol of the lock for preventing operation of thetiming mechanism until the lock is moved to release position.

28. In combination, a safe including a'closure, protecting mechanism for the closure including relatively movable devices, one of which forms securing means for the closure and the other comprising obstructing means for the securing means arranged to be conditioned by the latter upon its release for automatic operation to obstructing position when the securing means is moved to closure protecting position, timing mechanism arranged to be set for operation for a predetermined period and adapted at the end of sald period to effect release of the obstructing means andselective control means arranged to normally obstruct operation of the timing mechanism.

29. In combination a safe including a closure, protecting mechanism for the closure including relatively movable devices, one of which forms securing means for the closure and the other comprising obstructing means for the securing means arranged to'be conditioned by the latter upon its release for automatic operation to obstructing position when the securing means is moved to closure protecting position, timing mechanism arranged to be set for operation for a predetermined period and adapted at theend of said period to effect release of the obstruct ing means and means for normally obstructing operation of the timing mechanism in-' cluding manually operable selective control means. v

30. In combinatioma safe including a closure, protecting mechanism for the closure 4 including relatively movable devices, one

of which forms securing means for the 010- sure -and the other forming obstructing means for the securing means and embodying relatively movable parts including a spring and tensioning means therefor adapted to be operated .by thesecuring means upon movement of the latter ,to release position whereby one of said movable parts is conditioned for movement automatically by the spring to obstructing position with respect to the securing means when the latter is moved to closure protecting position and selective control means for efiecting release of said parts.

31. In combination, a safe including a closure, protecting mechanism forthe closure including relatively movable devices one of which forms securing means for the closure and the other forming obstructing means for the securing means embodying a plurality of relatively movable parts including an actuating member and a conditioning member therefor adapted to be operated by the securing means upon movement of the latter to release position whereby upon release of the conditioning member by movement of the securing means to closure'protecting position one of said parts will automatically move to obstructing position with respect to the securing means and selective control means for effecting release of said part. i

32. In combination, a safe including a 010- sure, locking mechanism for the closure including bolt-Work and obstructing means therefor comprising a spring and'a plurality of relatively movable members, one comprising a holding membermovable to tension the spring whereby to condition another of said members for movement automatically to obstructing position with relation to the bolt work when the latter is cast and a third member arranged for operation by the bolt work upon release of the latter to move the holding member to spring tensioning position at which it is arranged to support the second mentioned member in obstructing position and releasable means for guarding the holding member. i

33; In combination, a safe including a 010- sure, locking mechanism for the closure including bolt work and obstructing means therefor comprising a spring and a plurality of relatively movable members, one comprising .a holding member movable to tension the spring whereby to condition another of said members for movement automatically to obstructing position with relation to the boltwork when the latter is cast, a third member arranged for operation by the bolt work upon release of the latter to move the holding member to spring tensioning position at which it is arranged to support the second mentioned member'in obstructingposition and selective control means for guarding and releasing the holding member.

34, In lock mechanisms for closures, bolt work for protecting the closure, a pivoted dog movable to obstruct the bolt work and having a spring associated therewith, a holder for the dog movable to tension the spring, a member adapted to be actuated by the bolt work upon movement of the latter to release position whereby to move the holder to spring tensioning position, the spring serving to automatically move the dog to obstructing position when the bolt work is cast, from which position the dog is adapted to drop by gravity when released, a latch for coupling the dog with the holder when it is moved to obstructing position and means for releasing the latch upon dropping of the do 35. In lock mechanisms for closures, bolt work for protecting the closure, a pivoted dog movable to obs iruct the bolt work and having a spring associated therewith, a holder for the dog movable to tension the spring, a member adapted to be actuated by the bolt work upon movement of the latter to release position whereby to move the holder to spring-tensioning position, the spring serving to automatically move the dog to obstructing position when the bolt work is cast, from which position the dog is adapted to drop by gravity when released, a latch for coupling the dog with the holder when it is moved to obstructing position, means for releasing the latch upon dropping of the dog and releasable securing means for the holder.

36. In combination, a safe including a closure, securing mechanism therefor, a combination lock includin an operating spindle, and means for obstructing the securing mech: anism including a member arranged to swing about the axis of the spindle and to be operated thereby.

37. In combination, a safe including a closure, securing mechanism therefor, a combination lock including an operating spindle, an abutment adjacent the lock and means for obstructing the securing mechanism including a member arranged to be operated by the spindle to swing about the axis thereof and adapted when the combination is destroyed to be held in check by said abutment.

38. In combination, a afe including a closure, securing mechanism therefor, a combination lock including an operating spindle .and means for obstructing the securing mechanism including relatively movable parts one of which is operatively associated with the spindle and arranged to have a swinging movement about the axis thereof.

89. In combination, a safe including a closure, securing mechanism therefor, a combination lock including an operating spindle, means operatively connected with the spindle for obstructing the securing mechanism including relatively movable parts, one of which is arranged to have a sliding movement to inoperative position and a swinging movement about the axis of the spindle while operating another of said parts and means for preventing release of the first mentioned part when the combination is destroyed.

a0. In combination, a safe including a closure, securing mechanism therefor, a combination lock including a spindle and a series of tumblers provided with notches adapted to be brought into registering relation when the lock is in release position, means for obstructing the securing mechanism including a member operatively associated with the spindle and arranged to swing about and to move relative to its axis and having a portion adapted when the lock is in release position to engage the tumbler within said notches whereby upon rotation of the spindle in opposite directions the tumbler will swing said member to and from obstructing position with respect to the securing mechanism.

41. In combination, a safe including a closure, securing mechanism therefor, a combination lock including a spindle and a series of tumblers provided with notches adapted to be brought into registering relation when the lock is in release position, means for obstructing the securing mechanism including a shiftable member and an operating member therefor arranged to swing about and to move relative to the axis of the spindle and having a'portion adapted when the lock is in release position to engage the tumblers within said notches whereby rotation of the tumblers in opposite directions will cause said member to move the shiftable member to and from obstructing position with respect to the securing mechanism, means connected with the spindle for actuating said member to cause said portion to move out of said notches when the shiftable member is in protecting position and the spindle is operated to destroy the combination and means for preventing operation of said member until the lock is subsequently moved to release position.

42. In combination, a container including a closure, securing means for the closure, protecting means for preventing unauthorized release of the securing means and means including a releasable obstructing member arranged to be conditioned by the force of an explosion within the container to guard said obstructing member against release said means including a projection extending inwardly from the closure and a member in the path thereof having one end fixed, the opposite end of which is swung to protecting position with respect to said obstructing member by said projection.

43. In combination, a container including a closure, securing means for the closure, a support within the container, a yieldable element interposed between the closure and support permitting the latter to be moved tothereby.

Ward the closure underthe: force of aii'explosion within the" container, an. abutment on the closure, releasableprotecting. means for preventing unauthorized release of the semen iiig means and a-ineniber on said support adapted upon movement of the latter toward the closure under the force of the-explosion to be moved by said abutment into position to prevent release of said protecting means. 44. In combination a container including a closure, securing means therefor, releasable obstructing means for the securing means in cluding timing mechanism, a device normally holding the timing mechanism IIYCllQCk, re-

lease ineans-forsaid device including aspindle operable from the exterior of theclosure and having a part for moving said device to releaseposition andmeans arranged toautoniatieally assume a position at which it will prevent release of-said device should the spindle be driven in and said part displaced 4:5. In combination a container including a closure, securing-means therefor, releasable obstructing means for the securing means, control means for checking release of c the obstructing means including timing vinechanism a device normally holding the timing mechanism against operation, manually operable releasemeans'for said device and means under the control ofsaid manually operable release nieansarran e'd to auto- V matically assume a position at which it will maintain said device in-posit-ion tohold the timing mechanism in checkshould themanually operable release means be removed with the closure in looking position. 7

46., In combination, a container including a-closure, securing means for the closure,fan

obstructing element forthe securing means, releasable holding means for the obstructing element, timing mechanism having a rotary part and driving means therefor 'adapted after operation of the driv ng means for-a predetermined periodto move said holding means to release POSltlOI1,-IL-(l6$l6 spaced from andindependent of said holding means in. all positions of the l2lttl,-SliddGVlC8 nor- .mally occupying a'position at. which itserves to hold the driving means in checkand oper ating means for said device accessible from v the exteriorof the container andiadjustable to move said device toandfrom said position when the closure is In closed -position,

said operating means bcing'independent of I the obstructing means in all of its positions.

47. In combinatioma container including a cl0sure,securing means therefor, releasable obstructing means for the-securing means, timing mechanism for effecting release of the obstructing means, a releasable device for holding the timing meclianisms in check, means including a spindle operable fiointhe exteriorof the containenandiineaiis serving 1 to prevent: release. of said devicein case' the spindle is driven in. with the closure in locked position whereby: to prevent'release of the timing mechanisms; r r

48. Lock mechanism comprising securing means movable to and from locking position. .and protecting mechanism fortlie securing means arranged to be conditioned by thesecuring nieaiis'when it is moved from securing position for movement automatically; to obstructing position relative to said securing means upon return of the latter to locking position. V

49. Lock mechanism comprising securing meaiis movable to and from looking position, v

protecting IIIECllZllHSII'l'fOI the-securing K162111$j ari'anged'to be conditioned .by% tlieseci-iring means whenit is moved from securing position for movement automatically to obstructing position relative to-said securing means upon return of the latter to lockingposition,;;

and a releasable holdingdevice for the protecting mech aiiisiiiiarranged to I automaticah ly move to lioldingposition when said protecting mechanism is moved to obstruct said securing means.

50. Lock mechanism comprising securing means movable to and from locking position,

protecting mechanism for the securingmeans arranged to be conditioned by the securing V meanswhen' it is movednfrom securing pesk tion for movement automatically to obstructing position relative to said securing means upon return of the latter tolocking position, a device for holding the: protecting mechanism in position to obstructithe securingmeans and atiniing' mechanism arranged after operation fora predetermined period to'release said holding device whereby to per mit release of said protecting mechanism.

\ 51. Lock mechanism :comprising securing 1 means movable to and: from locking position and protecting mechanism for the securing means embodying relatively movable parts including a spring and tensioning means therefor arranged to be operated by the se-;

curing meansupoii movement of the latter from locking positioii wliereby one of said bers for movement automaticallyto obstructing-position with relation to the securing-1 means when the latter is moved to locking position and a third member arranged for operation by the securing means upon moving the latter 'roni'locking position whereby the pivoted member is moved to spring tensioning i position at which it is arranged to support the second mentioned member in position to obstruct the securing means.

53. Lock mechanism for guarding bolt work comprising a pivoted dog movable to obstruct the bolt work and having a spring associated therewith, a holder for the dog movable to tension the spring, a member arranged to be actuated by the bolt worn upon movement of the latter to release position whereby to move the holder to spring tensioning position, the spring serving to automatically move the dog to obstructing position when the bolt work is cast, from which position the dog is movable to clear the bolt work, a latch for automatically coupling the dog with the holder when it is moved to obstructing position, means for releasing the latch upon movement of the dog from obstructing position and releasable means for supporting the holder in position to maintain the guard in obstructing position.

54. Locking means for a safe closure comprising, scc-uring means, a lock, normally inactive timing mechanism in-cluding power means and a rotary element driven thereby adapted to control the securing means and obstructing means for the power means 111- cluding relatively movable parts, one of said parts being arranged for movement by the lock to actuate the other when the closure is in closed position and both being spaced from and independent of the securing means in all positions of the latter.

55. Looking means for a sate closure comprising, securing mechanism including a guard and a releasable holding element therefor, a lock, timing mechanism comprising a rotary element for releasing the holding element and releasable power means for operating the rotary element, and means inde pendentof the guard and holding element for obstructing and releasing the power means comprising a movable part for holding the power means in check and an operating part for said movable part arranged to be actuated by the lock to obstructing position when the closure is in closed position and to release the power means when the lock is moved to unlocked position.

56. The combination of a container including a closure, securing mechanism tor the closure, a releasable guard for the securing mechanism, a retaining member operating; to hold the guard against movement from securing posit-ion, normally inactive timing mechanism including an operating member 'for moving the retaining member, said operating member normally occupying a po sition in spaced relation to the retaining member and adapted after operation of the timing mechanism for apredetermined period to engage and move the retaining memher into position to clear the guard, and releasable means independent of the securing after operation for 1 predetermined period v to release said guard means, and means under the control of the combination lock mechanism including part spaced from and independent of the guard means arranged upon destroying tie combination to move into position to hold the timing mechanism in check.

58. The combination of a safe having a door, bolt work for securing the door, guard means for the bolt work movable automatically into protecting position with relation thereto upon locking the door, a combination lock mechanism, normally inactive timing mechanism arranged after operation for a predetermined period to release said guard means, and means under the control of the combination lock mechanism including a part spaced from and independent of the guard means arranged upon destroying the combination to move into position to hold the timing mechanism in check.

59. The combination of a safe h-ving a door, a bolt for securing the door, guard means for the bolt movable relative thereto and operating to hold the same against release, a combination lock mechanism, normally inactive timing mechanism arranged arrer operation for a predetermined period o release said guard means, and means under the control of the combination lock mechanism including a part spaced from and independent of the guard means operating upon destroying the combination with the door in closed position to move into engagement with and to hold the cscapemenl' means of the timing mechanism against operation.

60. The combination of a safe having a door, a bolt for securing the door, guard means for the bolt movable automatica ly into position to protect the latter when it is moved to locking position, a combination lock mechanism including an operating spindle and tumblers associated therewith, normally inactive timing mechanism including a part arranged after operation for a predet a'mined period to release said guard means, a1 1 means under the control oi the tumblers of said combinauion lock arranged upon destroyi r the combination wiih the door in closed p on to move into obstructing position with respect to the escamment means of the timing: mechanisms.

61. The combination of a sate having a door, locking mechanism for the door, guard means movable to eliect release of saidlocking mechanism, normally inactive timing to release mechanism having associated therewith a member arranged after the timingmechani m', has been released and operatedfor' a predetermined period to move into operative en'- gagement with the guard meai stoflrelease the same whereby to-rele'a'se the locking mechanism, and obstructing means arranged to hold the z giming mechanism in check in advance of the movement of said member by the timing mechanisms into position to" gage said guard means, said ,obstructing means being operated to" obstr'nct-ing position afterthe'door has beenclosed, I

' 62. In combination, a'safe having .a door, locking mechanism for' securing the door in? cluding a self operating device rendered operative for movement to" securing position upon lockin'g the door, holding means for maintaining said device in locking position, normally inactive timing mechanism including a part arranged afteroperation for a selectedperiod from a predetermined positioirto start movement of said holding means to release position, obstructing means for holding the timing'mecha'nism in check with said part at said predetermined position, and means operable from the exterior of the door when the latter is in closed position to move said obstructing means into position'to obstruct the timing mechanism.

63. Lock mechanism for a safe door, comprising a bolt, guard means for the bolt movable automatically in'to protecting position with respect to the bolt upon locking the door, normally inactive timing mechanism including a device spaced from'said guard means and arranged after operation of the timing mechanism for a predetermined period to engage and move the guard means position whereby to release the bolt, a combination lock for the door comprising an operating spindle and tumblers actuated thereby, an obstructing device engaging v the escapement means of the timing mechanism to hold the latter in check when the door is locked, and means under the control of the spindle for releasmg said obstructing device when the combination is successfully operated.

64. Lock mechanism for a protecting structure, comprising relatively movable devices, one a locking device and the other a guard therefor movable automatically to protecting positionwith respect to the locking device upon movement of the latter to locking position, a retaining member for saldguard, normally inactive timing mechanlsm including a part arranged after operation for a selected period from a predetermined position to engage and move said retaining memher to release said guard, obstructing means for holding the timing mechanism in check with said part at said predetermined position, and means operable when said protecting structure is in locked position to move "engage and hold the" latter ing device upon movement of the latter to release said protectingstructure, retaining means forsiaid guard device operating to when 1t re moved to obstruct the locking device, and timing I mechanismarranged after operation for a predetermined period to release said rearing ing means whereby to" effect release of said guard device.

66. The combination of a safe door having.

securing means therefor, guard means for protecting the securing means and held by the la'tte'r'l against movement to protecting. position when the securing means is in nonsecuringl position and movable automatically to protecting position upon moving the securing means to securing position, acombination lock, normally inactive timing mechanism" having a part associated therewith arranged} after operation of said timing mechanisinfor a predetermined period to release said guard means to effect release of the securing means, and means controlled by'tfhe' combination loch for holding the tim ing mechanism in check in advance of said period of operation, said holding means being responsive to the combination lock and moving into position to hold the timing mechanism in check upon destroying the combinationof the lock and freeingthe' tiniing, mechanism for operation upon successful operation of the combination lock'.;

6 7 YThe combinationof a safe door having lochingmeans therefor, spring pressed guard means for. protecting the locking means and held by thelatter againstmovement to protectingposition when the locking means is in nonsecuring position, saidguardmeans being movable automatically to protecting position upon moving the locking means to securing position, timing mechanism arranged after operation for a predetermined period to effect release'of the guard means, a combination lock having notched tumblers, and means for holding the timing mechanism in check-in advance of said period of operation, said h lding means including a'pa'rt movable into the notches of the tumblers upon successful operation of the combination lock to release thetiming. mechanism and effective upon destroying the'combination' of the" lock with the door in closed position to return to obstructing" position with respect to the timing mechanism. I

68, Theco'mbination of a lock tectingf the locking means and held by the latter" against movement to protecting posi- 4 safe doorhaving 01 means therefor, guard means iorpro v tion when the locking means is in non-securing position, said guard means being movable automatically to protecting position upon moving the locking means to securing position, timing mechanism arranged after operation for a predetermined period to effect release of the guard means, a combination lock including tumblers and a spindle having a notched operating member for the tumblers, and a device for holding the timing mechanism in checl: in advance of said period of operation, a portion of said device moving into the notch of the tumbler operating member upon successful operation of the combination lock to permit release of the timing mechanism, the combination of the lock being capable of being destroyed with the safe door in closed position, and such destruction being effective to move said portion out of said notch in the operating member and to return said device to position to hold the timing mechanism in check.

69. The combination of a safe door having locking means therefor, guard means for protecting the locking means and held by the latter against movement to protecting position when the locking means is in non-securing position and movable automatically to protecting position upon moving the locking means to securing position, timing mechanism having a part spaced from said guard means and movable after the timing mechanism has operated for a predetermined period to engage and shift the guard means from protecting position whereby to release the locking means, a combination lock, and means under the control of said lock arranged upon destroying the combination when the door is closed to move into position to hold the timing mechanism in check in advance of said predetermined period of operation and moving upon successfully operating the combination to release the timing mechanism for operation for said period.

70. The combination of a safe door havlng locking means therefor, guard means for protecting the locking means, timing mechanism including escapement mechanism, said timing mechanism being effective to release the guard means to effect release of the locking means, a combination lock including notched tumblers and a spindle having a notched operating member for the tumblers, and a device engaging said escapement mechanism to hold the timing mechanism in check when the combination lock is in locked position, said device including parts arranged to move into the notches of the tumblers and operating member upon successfully operating the combination whereby to release the escapement mechanism for operation.

71. The combination with a safe door-having locking means mounted thereon, of guard means for preventing unlocking movement of said locking means, said guard means being escapes held in an ineffective position by the locking means when said locking means is in unlocking position, and being moved automatically to an efiective position when said locking means is moved to locking position, a combination lock, timing mechanism efiective after operation for a predetermined period to shift said guard means to an ineffective position to permit unlocking movement of said locking means, said timing mechanism including a vibrating pallet and an escapement wheel controlled thereby, an obstructing member for contacting with said pallet to prevent vibration thereof and thus to hold said timing mechanism against operation, and means controlled by said combination lock and ef fective upon successful operation thereof to shift said obstructing member to a non-obstructing position to permit vibration of said pallet and operation of said timing mechanism, said last named means being effective upon destroying the combination of the lock to move said obstructing member automatically to an obstructing position with respect to said pallet.

WILLIAM F. DIESEL. 

